* add ppo rl lightning template
* flake
* import gym without try as in qnet example
* fix import format
* remove torch.optim import, not required
* fix import format isort
* add trainer argparse
* change name of trajectory collection method
* add repo in references
* fix typo in comments
* use isinstance to verify actionspace type
* use fstring
* deduplication of logic code
* rename unused forloop variable
* use pl.seed_everything instead
* remove unused numpy import
* format string printed on error
* fix typo in comments
Co-authored-by: chaton <thomas@grid.ai>
Jirka Borovec